Caudal migration of endoprostheses after treatment of abdominal aortic aneurysms

James L. Ebaugh*, Mark K. Eskandari, Adam Finkelstein, Jon S. Matsumura, Mark D. Morasch, Fred L. Hoff, William H. Pearce

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Background. The purpose of this study is to assess the migration of endoprostheses 2 years after endovascular abdominal aortic aneurysm repair. Methods. Ten patients underwent placement of bifurcated endoprostheses for infrarenal aneurysm and had 2-year CT follow-up. Standardized contrast-enhanced CT with 1.5- or 2-mm overlapping slice thickness was used. Four independent observers measured the distance from the lowest renal artery to the craniad end of the graft. Results. As a whole, the endoprostheses migrated an average of 2.7 ± 2.6 mm caudad at 24 months compared with baseline (P < 0.001). Four patients (40%) experienced ≥3-mm migration of the endoprostheses. On review of the 6- and 12-month follow-up CT scans, movement occurred at both the first- and the second-year intervals. Conclusions. Endovascular stent-grafts frequently migrate away from the renal arteries. This may be due to natural elongation of the native infrarenal aortic segment, but could also result from inadequate attachment of the proximal stent-graft. Although there have been no adverse clinical events in this group, continued close follow-up is mandatory following endovascular aneurysm repair.

Original languageEnglish (US)
Pages (from-to)14-17
Number of pages4
JournalJournal of Surgical Research
Volume107
Issue number1
DOIs
StatePublished - Jan 1 2002

Keywords

  • Abdominal aortic aneurysms
  • Bifurcated endovascular grafts
  • Endografts
  • Migration

ASJC Scopus subject areas

  • Surgery

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